Magnetic disk storage case

ABSTRACT

The following specification discloses a magnetic disk storage case that can be used for such disks, as well as other magnetic memory materials common to computers and word processing. The storage case is formed from a single molded piece of plastic, such as polypropylene in the form of a clamshell or book-like case, having a top and bottom cover. The top cover receives a support ledge having flexible barriers thereon to maintain the magnetic materials stored therebehind on the ledge. The bottom of the case receives the ledge and the magnetic disks therein within a surrounding wall. The entire top cover with the ledge and the disks therein can be accessed by means of a resilient living hinge that allows for the lid to be opened into a clamshell configuration and supported against a stop member, against one of the edge walls, or by means of a channeled arcuate groove in combination with a pin that functions therewith.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The field of this invention lies within the art of storing magneticmemories, such as disks and diskettes. More particularly, it involvesthe storage on an accessable basis of such magnetic memory members forease and facility of withdrawal therefrom to an operator in a simple andutilitarian configuration.

2. The Prior Art

The prior art with regard to magnetic memory storage cases is limited tothe prior invention of one of the joint inventors herein and the artcited therein. In particular, one of the joint inventors is the inventorof U.S. Pat. No. 4,225,038 which issued Sept. 30, 1980. In thatparticular patent, the magnetic memories were stored on an insert thathad a place for receipt of the magnetic members and was pivoted on a topportion thereof. The top portion allowed the tray-like member to swinginwardly into the lid and then be folded in the entirety as a threepiece item.

The drawback of the device was specifically such that it had to bemolded in more than one portion. Secondly, it was such that it used asubstantially larger amount of raw material, in particular, plasticwhich is dependent upon petrochemical stocks. Furthermore, the devicewas not easily accessable for some people, due to the fact that it hadto be folded outwardly, inwardly and closed upwardly and downwardly in amore cumbersome manner than this particular invention.

This invention overcomes the prior art by being made from a one pieceinjection molded conformation. The one piece conformation is such thatit incorporates a ledge that is formed into the top of theclamshell-like member. The clamshell configuration opens so that it ishinged toward the rear and is in a resilient conformation so that it canrest against the sides of the bottom which have a projection againstwhich it is rested.

The entire conformation utilizes a living hinge having sufficientresiliency to cause the lid to be opened and held, with the ledge andthe magnetic memory members for easy access. The lid is not onlysupported by the base in a facile manner, but is also easily opened andclosed by a single manipulation for easy access to the magnetic memorymembers on the ledge in the top of the case.

In addition to the foregoing features, the device is easily assembled asan entire singularly molded configuration having a ledge that attachesto the binding or hinge area, as well as a top and bottom integratedinto one member for the support, display and ready accessability ofmagnetic memory members, such as disks. As a consequence, the inventionis a substantial step over the prior art as to configuration, usage,manufacturing and overall features to enhance the storage, accessabilityand utilization of magnetic disks and diskettes.

SUMMARY OF THE INVENTION

In summation, this invention comprises a magnetic disk memory storagecontainer formed from a single piece of plastic in a clamshellconfiguration with an upper lid having a ledge for the receipt of memorystorage disks that are received within the base or bottom thereof and isconnected by means of a living hinge.

More particularly, the invention comprises a book-like member that isopened and closed in a clamshell manner. The upper portion has a ledgebuilt thereinto. The ledge is formed as a single piece on a web of hingemember between the upper and lower portions. The upper portion comprisesan area for receipt of the ledge and lateral walls for preventing thememory storage members therein from moving outwardly.

The bottom has three upright walls that receive the top member that isfolded there between, while at the same time having support means forholding the upper member in an open clamshell relationship by means ofthe resilient hinge and holding means.

The holding means can comprise one of two configurations. The firstconfiguration has a pin and arcuate slot which receives the pin thatrides therein and seats within a hole within the slot when it is in theopen or extended position. The second configuration incorporates aprotuberance, pin or obstruction, which allows the lid in the resilientopen position to override it and then be received thereagainst.Afterwards, closing takes place by either spreading the walls to whichthe obstruction or pin is attached, or forcing the top to override thepins in a downwardly driven manner.

The foregoing configuration allows for facile opening, use, andmanufacture of the magnetic memory disk storage device of this inventionwhich shall be described in greater detail hereinafter.

DESCRIPTION OF THE DRAWING FIGURES

The invention will be more clearly understood by reference to thedescription below taken in conjunction with the accompanying drawingswherein:

FIG. 1 shows a perspective view of the storage case of this invention inits folded configuration;

FIG. 2 shows a side elevation view of the memory storage case with aportion of the top lid fragmented to show the ledge therein and is of anembodiment for holding the lid in its unfolded condition by means of anarcuate channel and pin;

FIG. 3 shows a side elevation view of the magnetic storage case of thisinvention in a partially fragmented form wherein the lid is resilientlyreceived against a pin or protuberance of the lower wall portion of thebottom thereof;

FIG. 4 shows the disassembled one piece configuration of the embodimentshown in FIG. 2 as it is completely opened in a partially fragmentedside elevation view;

FIG. 5 shows a perspective view of the configuration shown in FIG. 3when the lid is in its opened position resting against the bottom of thestorage case.

FIG. 6 shows a detailed fragmented partially sectioned side view of thehinge of the showing of the configuration of this invention in FIGS. 2and 5;

FIG. 7 shows a perspective fragmented detailed disassembled view of themeans by which the top is held open in the embodiments of FIGS. 2 and 4;

FIG. 8 shows a fragmented perspective view of the means for resting thetop against the bottom of the magnetic memory storage walls of thedevice shown in FIGS. 3, 5 and 6; and,

FIG. 9 shows the resilient latch means in cross section as shown in thedirection of lines 9--9 of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Looking more specifically at the drawings derived from FIG. 1 and thealternative embodiments thereof, it can be seen that the clamshellconfiguration of this invention has been folded together in a closedmanner. The invention comprises a case 10 having an upper storage or lidsection 12 and a lower portion 14. The two are joined together by ahinge member 16 spanning the upper and lower portion respectively 12 and14. The upper portion or cover 12 has side walls 20 and 22 which arechampered on their leading surfaces at their front portions such asfront portion 24. The top or lid portion 12 nests between three walls onthe base or bottom 14, specifically walls 26, 28 and front wall 30. Theside walls 26 and 28 receive the walls 20 and 22 therebetween, while atthe same time providing a support function as will be detailedhereinafter.

The clamshell configuration of the top and the bottom is such that anouter ledge or skirt 34 and 36 and 40 completely surrounds the walls 20and 22, as well as a small front wall 44.

A second skirt on the base 14 surrounds the walls 26, 28 and 30 in theform of a skirt having portions 50, 52 and 54.

The foregoing skirts or side ledges on the walls provide significantresiliency and strength to the entire device. Furthermore, they allowthe device to be formed in a manner so that the walls can provide anoverall resting platform or leg upon which the device can rest.

Looking more particularly at the showings of FIGS. 3, 5, 6 and 8, it canbe seen that the top or cover 12 has a lower frontal wall 44 at thefront thereof. The frontal wall has a series of sloping angular uprights60. The sloping angular uprights 60 are such that they provide forrigidity of the wall 44 and more importantly, ease and facility ofwithdrawal of magnetic memory disks as will be described hereinafter.

The lid 12 with its side walls 20 and 22 are such that they receive themagnetic memory disks therebetween resting on a ledge, generally shownas ledge 64. The ledge 64 comprises a transverse portion 66 and twoupright portions 68 and 70. The upright portions 68 and 70 from thetransverse portion are flexible in nature and allow for a displacementdownwardly toward the base 14 for fanning and removal of magnetic memorydisks that are implaced between the top inner surface of the top 12 andthe ledge 64. These, in particular, thus permit the view through thespaces between the uprights 68 and 70 of the magnetic memories, while atthe same time allow for flexible displacement and fanning of them. Inoperation the uprights and the transverse portion 66 should not beoverly flexible to create a sag when the memory members are fanned, butyet at the same time be sufficiently flexible and resilient to providesupport and fanning of the members therein.

The ledge 64 includes a pair of tabs 80 and 82 that are angularly offsetfrom the transverse portion by means of a curved offset 86. The tabs 80and 82 have an angular locking wedged tab 90 on the edge of each onethat slopes backwardly on a slope 92 toward the base of the tab on whichit is formed as a portion thereof, namely tab 80. The tab 80 is insertedinto a slot 94 having a sloping surface 96 over with the angular tab 90can be forced and locked in connection with the tab 80 being insertedtherein.

The slot 94 is formed within the side walls 20 and 22 of the top cover12 at the time of injection molding so that the entire device is formedas one piece. The transverse portion as can be seen in FIG. 6 is formeddirectly to the back portion 16 or hinge that can also be categorized asa binding of a book-like clamshell between the two respective top 12 andbottom portions 14.

In this manner, the ledge 64 is connected by means of the tabs 82 to theside walls 20 and 22, while at the same time permitting the ledge 64 tobe formed in the entirety with the top and the bottom in the manner tobe described.

The tabs 82 are offset with the bend 86 to allow for a relatively flushplacement of the frontal leading surface of the ledge 64 along thebottom edges of the walls 20 and 22. This effectively provides for afrontal surface that can lie within the bottom 14 of the containerwithout protruding with obtrusive edges.

The tabs 82 are easily snapped into place within the openings, or slots94 with the overriding angle tabs 90 engaging the edges 96 thereof. Thesnapping configuration is achieved by the resilience of the walls 20 and22 being of sufficient resilience to directly ride against the side edge100 of the ledge 64. The angular tab 90, however, serves to enhance thelocking function.

In order to provide for the slot 94 being formed in the side walls 20and 22, an expanded ridge 102 is formed within the side walls 20 and 22to allow for sufficient material to cover the slots 94. This expandedportion 102 is such that it not only provides for the expanded portionof the slots so that there is sufficient material in the area of thewall to allow for the slot 94, but also, it effectively allows for aresting of the top 12 against the bottom 14 within a groove 106 in thebase of the bottom 14. The groove 106 allows for receipt of the ridge102 so that the expanded portion can lie relatively flat within thebottom of the base 14 when it is in its folded condition.

Each side wall 20 and 22 incorporates an opening 110. The opening 110receives a protuberance which shall be described hereinafter. Theprotuberance is used in a manner to rest the top against and serves asubstantially important function in providing the effective holding ofthe top 12 when the clamshell configuration is in its open condition.

More particularly, a pin 112 has been shown on the side walls 20 and 22.The pin 112 can be any particular protuberance, expansion, knob or otherobstruction against which the bottom edge of the walls 20 and 22 canrest against. In this particular case, it is seen that the ridge 102having its bottom edge formed as a portion of the bottom edge of thewalls 20 and 22 rests against pin 112. The ridge 102 effectivelyoverrides the pin 112 in a flexible manner such that it allows formovement and displacement of the walls 20 and 22 over the pin andsecurement through the resilience of the back binding or hinge 16 in theopen clamshell configuration.

The walls 26 and 28 to which the pin is connected are such that theyhave sufficient resiliency to flex and bias inwardly or laterally withrespect to the bottom to provide the top 12 with an overridingcapability when the protuberance or pin 112 is in the way thereof.However, it should be understood that the resilience must besufficiently strong to drive the pin 112 inwardly so that after thewalls 20 and 22 override the pin they will allow the pin to underlie andfirmly support the top 12 in its open clampshell configuration. This isin part provided by a reinforcing rib 130 which is formed into the sidewalls 26 and 28. The reinforcing rib creates a situation wherein thereis sufficient strength to reinforce the end regions of the walls 26 and28 so that they will not unduly fatigue and collapse outwardly aftersignificant usage. However, it should be understood that anyreinforcement can be utilized to hold the walls 26 and 28 in resilientlyfixed juxtaposition.

The bottom or base 14 is such that it is in relatively snug relationshipto the top in its overlying locked configuration to provide for thelocking action detailed in FIG. 9. The lock shown in FIG. 9 iseffectuated by means of a relatively small rib 140 that is receivedwithin a groove 142 of the front wall 30. An overriding ledge 144 of thetop 12 rests on the top portion of the wall 30. In this manner, the topportion 12 indexes on top of the wall 30 at the interior angle formedbetween the top 12 and a depending frontal portion of the wall, namelydownwardly extending front wall portion 44. As previously stated, thedownwardly conforming front wall 44 has a number of angular ribs 60which allow for the withdrawal of magnetic memory members across theirsurface in the direction of arrow 61. Thus, they are able to slide overthe interior surface of the downwardly depending skirt or wall 44 whenremoved from the ledge 64.

The overall configuration is such that it allows for a tight indexing ofthe top 12 and the bottom 14 so that the small ridge 140 can be seatedeffectively when the entire clamshell is closed within the groove 142 ofthe frontal wall 30.

Looking more particularly at FIGS. 2, 4 and 7, an alternative embodimentfor allowing the top 12 to move upwardly and downwardly and be securedin the open clampshell configuration is shown. In this particular case,the bottom side walls 26 and 28 are analogous in all respects to theprior embodiment. Furthermore, the top side walls 20 and 22 are alsoanalogous. All other details are also similarly numbered, such as thefrontal wall portion 44 with the sloping ribs 60. Furthermore, the ledge64 as shown in the other embodiments is connected by the same slot 94and tab 82 type of configuration. In addition thereto, the bottom wall28 incorporates a pin analogous to pin 112 but not always identicalthereto because of the function that it must provide as hereinafterdetailed.

In particular, a pin 112(a) has been shown formed with the wall 28whereby it extends inwardly to engage an arcuate groove 300. The arcuategroove 300 terminates in a bottom through-hole 302 and an upperthrough-hole 304. The openings 302 and 304 respectively receive the pin112(a) at the top and bottom portion of the swing of the top lid 12 whenit is moved with the pin 112(a) riding and biased in the arcuate groove300.

In order to provide for the through-hole 302, an expanded portion 310 ofthe top wall 22 is provided for. This is received within a bottom groove312 when the top 12 is completely enclosed within the bottom 14.

The pin 112(a) is initially seated within the opening 304. As the top 12is moved angularly backwardly, it causes the pin 112(a) to expandoutwardly away from the opening 304 and ride within the arcuate groove300 until it arrives within the through-hole 302 into which it isresiliently driven by the resilient biasing of the side wall 28 inconjunction with the resilience provided thereto, which can be enhancedby the rib 130 as previously explained.

The function of the groove 300 allows for an arcuate swinging guide tothe top 12. There is sufficient support so that the top and the bottom14 in the open clamshell condition generally shown in FIG. 2 or in theclosed postion, as seen in FIG. 1 can be effectuated.

The hinge 16 is formed as a living hinge with the ledge 64 and has twonarrow webs 400 and 402 which are analogous in both embodiments. Thenarrow portions 400 and 402 provide for a flexible opening and closing,yet sufficient resiliency to drive the top 12 against its resting pin112, or pin 112(a) within the through-hole 302. A major spanning portionof the hinge 16 is formed with a substantial degree of material beyondthe amount of the webs 400 and 402. This major portion 406 has anupright ridge 408 which is received on the exterior of the walls 26 and28, so that its leading surface when in the closed position, engages therib 130 and the sides of the wall 26 and 28. This effectively rigidifiesthe structure in the closed condition so that the upper leading edge 408can be received as an outer rigidifying element to prevent outerexpansion of the walls 26 and 28 when the container is in its closedconfiguration. The detail of this can be seen more effectively whereinthe leading edge of the rib or ridge 408 would be placed within thespace 412 that exists between the rib 130 and the trailing edge of thewalls 26 and 28.

METHOD OF MANUFACTURE

The method of manufacturing the foregoing product is substantially suchthat it is formed from an injected molded plastic. The plastic can be inthe form of polypropylene or any other suitable equivalent, such aspolymers that have the flexibility and general equivalent resiliency ofpolypropylene when in the configuration in which it is formed.

The conformation of the injected molded item should be such that thebinding 16 is formed as an integral item with the webs 400 and 402between the top 12 and the bottom 14 in one integrated conformation.When the item is formed, it can be molded such that the item has theledge 64 molded as one unitary item with the back of the binding 16relieved so that the ledge 64 is not buckled. However, this is notabsolutely necessary and other alternatives can be utilized to make thiscontainer. However, it should be understood that one of the outstandingfeatures of this invention is that it is molded as a single unitarystructure which includes the top 12, bottom 14, hinge 16 and ledge 64formed as part of the living hinge.

After the unit has been formed and molded with all the openings, ridges,splines, grooves and other attendant items of this device, it can thenbe assembled. However, it should be understood that it is molded in theconfiguration generally shown in FIG. 4 and FIG. 6, wherein the ledge 64is molded in situ as part of the entire device in the manner whereby itis formed on the binding or hinge 16. In its molded configuration, itserves to provide a resilient firm ledge 64 upon which the magneticmemory members, such as disks and diskettes can be stacked.

In order to have the ledge 64 connected to the top 12, the top is bentforwardly on the hinge point 400 until the ledge 64 with its tabs 82 arein direct alignment with the openings 94. In this manner, the tabs 82are then wedged into the openings 94 and are retained by means of theangle tabs 90 engaging the sloping surface 96 of the opening 94. Thisthereby accommodates a locking in place. However, it should beunderstood there is a resilience of the side walls 20 and 22 ofsufficient strength to hold the tabs 82 in place within the openings 94.This thereby completes the entire assembly of the device so it can thenbe utilized in its folded or unfolded configuration.

OPERATION

In operation, the case is utilized with approximately ten disks ordiskettes resting on the interior between the ledge 64 and the insidesurface of the top 12. They are held in place until the box is opened toits clamshell appearance. After the box has been opened, the pins of theconfiguration of FIG. 8 are overriden by the pins being pulled from theopenings 110 into which they are normally indexed in the closedposition. After overriding the openings 110, they then slide on theinterior surface of the walls 20 and 22 until the walls override the pinand rest in the position shown in FIG. 8 on the pins 112. In thisconfiguration, the top 12 serves to rest thereagainst by the resilienceof the hinge 16 pulling the lid 12 forwardly against the surface of thepins 112 or any other protuberance or blockage formed on the walls 26and 28 in an equivalent manner.

In order to close the container, the walls 20 and 22 can either be movedlaterally outwardly to slide beyond the interior dimensions of the pins112 or a forceful downward movement of the top 12 against the pins 112can serve to override the pins 112 until the top 12 is completely foldedinto the base. Upon folding into the base, the ledge 64 rests againstraised portions shown as arrows 15 and 18 that have been raised from thesurface of the bottom so that the ledge rests thereon and the disks arenot allowed to provide a substantial downward bending moment against theledge 64. In addition thereto, the ridges 140 seat within the groove 142in a manner whereby the tight juxtaposition of the entire device in itsfolded configuration provides a closure between the ridge 140 and thegroove 142.

The foregoing generally comprises the entire disclosure of this device,as well as the method of manufacture and operation thereof. It isthought that it is a substantial step as to its clamshell configuration,its unitized structure and as to its overall configuration to beunobvious and novel over the prior art. Accordingly, the followingclaims should be used to construe the scope and spirit of the inventionhereof.

We claim:
 1. A container for magnetic storage material such as disks,magnetic cards and the like comprising:a clamshell-like opening andclosing container having a bottom portion which generally provides abase and a receptacle for a top portion of said clamshell containerwhich has been hinged thereto and which has a ledge within said topportion of said container for receipt of magnetic memory storage membersbetween the ledge and the inner surface of said container; means forresiliently hinging said bottom and top member formed from a continuoushinge member between said top and bottom member; means for holding saidtop member open in a resting mode on said bottom member for exposure andaccess of magnetic storage members resting on said ledge between saidtop member and said ledge comprising a protuberance which can engage thebottom portion with respect to said top member; resilient side walls atleast partially surrounding said bottom portion into which said topportion is received of sufficient resilience to allow said protuberanceto override its engagement by flexing laterally to permit suchdisengagement; and, lateral walls on either side of said top portion inproximate relationship to said ledge for capturing magnetic memorymembers between said lateral walls, said ledge and said inner surface ofsaid top member.
 2. The container as claimed in claim 1 wherein saidentire container is formed from one single piece of molded plastic. 3.The container as claimed in claim 2 wherein:said ledge is attached tosaid hinge in said molding process and further comprising means forconnecting said ledge to the side walls of said upper cover.
 4. Thecontainer as claimed in claim 3 wherein said means for attaching saidledge to the side walls of said container comprises:an opening withinthe side walls; and, a tab for receipt within the side walls of saidcontainer formed on said ledge.
 5. The container as claimed in claim 4wherein:said tabs have a further angular tab for receipt within theopening of said side walls of said upper portion of said container. 6.The container as claimed in claim 1 wherein:said protuberance means forsupporting said upper portion comprises a pair of pins projectinginwardly from the portions of the walls surrounding said base andwherein said walls are sufficiently resilient to allow said top portionof said container to override said pins and be placed in a downwardconfiguration.
 7. The container as claimed in claim 1 wherein said meansfor supporting said upper portion with said lower portion comprises:apin projecting from the interior wall of said lower portion extendinginto an arcuate groove having through-holes for receipt of said pin inan angular open and closed position.
 8. A magnetic memory storagecontainer comprising:a lower tray-like base having resiliently flexibleside walls therearound on at least three sides thereof; an uppertray-like member having lateral walls on the sides thereof; a livinghinge molded into said upper tray portion and said lower tray portion ina book-like binding to allow said upper tray portion to fold inwardlyand outwardly between the walls of said lower tray portion; a ledge onsaid upper tray portion between the side walls of said upper trayportion forming a pocket between the interior of said upper tray portionand said ledge and having resilient fan tabs upon which magnetic mediacan be supported; and, protuberance means on said resiliently flexibleside walls for engaging said upper tray portion with said lower trayportion in an open clamshell configuration for access to said magneticmemory members stored within said upper tray portion on said ledge, sothat upon forced movement of said protuberance means they will overridethe engagement of the upper and lower portions by flexing said sidewalls.
 9. The container as claimed in claim 8 wherein:said upper trayportion has a ledge formed as an integral portion of the entirecontainer and is a unitized connected structure so that it has aconnected relationship between the upper tray portion and the lower trayportion and said ledge which is formed during a molding process for thecontainer.
 10. The container as claimed in claim 8 wherein:said hingebetween said upper tray portion and lower tray portion is formed of aplastic living hinge having a thin web portion for allowing bending atthe connection points between said upper tray portion and said lowertray portion.
 11. The container as claimed in claim 10 furthercomprising:openings within said upper tray portion walls; and, tabs onthe lateral portions of said ledge for receipt within the openings ofthe walls of said upper tray portion.
 12. The container as claimed inclaim 11 further comprising:angular locking tabs on said tabs of saidledge for receipt within said openings of said upper tray portion. 13.The container as claimed in claim 12 further comprising:protuberancesextending from the interior of the walls of said lower tray portion,against which said upper tray portion can rest thereon when it is in anopen angular position.
 14. The container as claimed in claim 13 furthercomprising:a reinforcing rib in proximate relationship to said pin forreinforcing the walls in a laterally resilient manner of said lower trayportion.
 15. The container as claimed in claim 14 further comprising:arib at the edge regions of the hinge on either side thereof whichindexes and overrides the outer portion of said lower tray-likecontainer walls for securing and being received against the sides ofsaid lower container walls for holding it within a closed position. 16.The container as claimed in claim 8 wherein said means for holding saidupper tray-like member against said lower tray-like member comprises:anopening within the side wall of said upper portion at a point where theupper portion is opened in its supported relationship; a pin on theinterior side of said lower tray walls for receipt within said opening;and, a second opening at the point where said container is closed forreceiving said pin when the container is closed.
 17. The container asclaimed in claim 8 wherein:the upper tray-like member has a skirt on thefrontal portion thereof between said side walls; and, a sloping surfaceinteriorly of said skirt against which said magnetic memory members canbe slid outwardly over the skirt.
 18. The container as claimed in claim17 further comprising:a locking means on said skirt having means forengaging the front walls of said lower tray.
 19. The container asclaimed in claim 18 further comprising:a ridge on the front of saidskirt forming said locking means; and, a groove within the front wallfor receiving said ridge.
 20. A unitized single injection moldedcontainer for magnetic memories such as disks and the like comprising:alower tray-like member having resilient lateral walls and a frontal wallspanning said lateral walls forming a base-like container therein; anupper tray-like member having lateral walls with a minor wall extendingtherebetween across the frontal portion thereof; a living hinge moldedas an integral portion of said upper and lower tray-like members havinga thinner web-like portion in connected relationship to the upper andlower portions at the point where they are joined and a thicker portiontherebetween forming a binding between the two; a ledge molded to saidhinge along the lower portion thereof having a pair of tabs at eitherend; openings within the lateral walls of said upper tray-like memberfor receipt of said tabs for holding said ledge in proximaterelationship thereto; a protuberance for engaging said upper tray-likemember in an open upper position which can be overridden by saidprotuberance disengaging said resilient lateral walls; and, a means forlocking said upper tray-like member within said lower tray-like member.21. The container as claimed in claim 20 wherein:said protuberances areformed as pins extending inwardly from said walls upon which said uppertray-like member can rest in its open configuration with the resiliencyof said hinge biasing said upper tray-like member thereagainst.
 22. Thecontainer as claimed in claim 20 further comprising:an arcuate groovehaving an opening for receipt of a pin extending as a protuberance ofsaid inner portion of said tray-like member; and, a second opening forindexing said pin when said upper tray-like member is in a closedposition.
 23. The container as claimed in claim 22 wherein said meansfor locking said upper tray-like member to said lower tray-like membercomprises:a respective ridge and groove on the interfacing portionthereof for holding them in juxtaposition.
 24. The container as claimedin claim 30 wherein:said protuberance of said lower tray-like member isreinforced by means of a rib extending on the outer walls of said lowertray-like member for reinforcing said area near said protuberance toprovide an inner bias thereto of sufficient resiliency that can holdsaid upper tray in the open condition yet be overriden thereby when saidupper tray-like member is pushed down thereagainst for closure.
 25. Thecontainer as claimed in claim 24 wherein:said tabs for securing saidledge to said side walls have an angular edge portion for receipt withinsaid openings; and, said openings have a matched angular portion forreceipt of angular tabs.